Question

Какое вещество выделяется на катоде при электролизе водного раствора CuSO4 1)Cu 2)O2 3)H2 4)SO3

Answer 1

На катоде при электролизе раствора сульфата меди выделяется - медь

Answer 2

Ответ: 1 - Cu (медь).

Answer 3

Electrolysis of Aqueous Copper(II) Sulfate Solution

When an aqueous solution of copper(II) sulfate (CuSO4) is electrolyzed, different substances are produced at the anode and the cathode. Let's find out what substance is released at the cathode.

The substance released at the cathode during the electrolysis of aqueous copper(II) sulfate solution is: H2 The electrolysis of aqueous copper(II) sulfate solution results in the production of hydrogen gas (H2) at the cathode and copper metal at the anode. This is due to the reduction of copper(II) ions at the cathode, leading to the formation of copper metal and the release of hydrogen gas.

Therefore, the correct answer to the question is 3) H2.